I liked the idea of the Black Rapid strap, but was concerned with the scratching issue (from the carabiner) reported by a number of users. The UltraFit has a unique connector which makes it a non-issue. The quality of the strap and all the hardware is very high.

I really like the quick-adjustment on the strap. Makes it simple to move from being tucked close to the body and quick extension to eye-level. Plus you can lock it into a specific position with no effort.

For switching between body and lenses, I use the RRS B2-FAB-F flat-back clamp.